UMWorkerProcess Creating Webshell

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This query detects unusual file content created by UMWorkerProcess, indicating exploitation of CVE-2021-26858 to generate a web shell. More related queries can be found on the Microsoft Security Response Center blog.

Attribute Value
Type Hunting Query
Solution Web Shells Threat Protection
ID 60d15bd4-1fad-4a70-bc3b-094dc1c5e554
Tactics Execution, Persistence, Exploit
Required Connectors MicrosoftThreatProtection
Source View on GitHub

Tables Used

This content item queries data from the following tables:

Table Transformations Ingestion API Lake-Only
DeviceFileEvents ?

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